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Determination of the Halogen Elements in the Deep UV Region of the Spectrum by ICP

There are many applications where the ability to measure the halogen elements, at the same time as the metallic elements, is desirable. A few of these include the measurements of Cl and Br in refinery process fluids, the measurement of Cl and Br in waste oils and the determination of Cl-, Br- and I- in food supplements and drinking water.

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Determination of Alloying Elements in High Carbon Steel by Radially Viewed ICP

Carbon steels are by far the most frequently used steels. More than 85% of the steel produced in the US is carbon steel. These steels are classified by their carbon content. Table 1 shows the classification of carbon steels and some typical uses.

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Chemical and lead isotope analysis from the Warring States Period

In the context of the present study, we have conducted chemical and lead isotope analyses on twelve ancient glass samples unearthed from Chu tombs in Changde City, Hunan Province. The results of the chemical analysis of these samples show that all samples are PbOeBaOeSiO2 glasses, thus indicating that they are all traditional ancient Chinese glasses. The chemical results also suggest that all Bi wares may either share a common source or were produced according to similar recipes. In turn, the eye beads are different from the Bi wares for their distinct chemical composition.

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Chemical analysis of white porcelains from the Ding Kiln site, Hebei Province, China

The Ding kilns were some of the most famous early kilns of medieval China, producing huge quantities of white and cream-white porcelains of outstanding technical and aesthetic quality. Since 1949 they have been excavated three times, in 1965, in 1987, and in 2009 respectively. In this latest study 69 white porcelain sherds from assured contexts and from the 2009 excavations were analyzed using laser ablation techniques (ICP-AES).

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Analysis of Stainless Steel by Dual View Inductively Coupled Plasma Spectrometry

Stainless steels are a corrosion resistant family of iron alloys that have a minimum of 10.5% Chromium. Their corrosion resistance is largely due to the formation of a passive chromium (III) oxide (Cr2O3) layer, approximately 1 to 5 nanometers (nm) thick, on the surface of the steel. If this layer is damaged by cutting, scratching or abrasion, it will regenerate, provided sufficient oxygen is available. By contrast, Stainless steels have poor corrosion resistance in low oxygen environments since the oxide layer cannot be repaired quickly enough. In addition to chromium, Nickel, molybdenum and niobium are also alloyed to improve corrosion characteristics.

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Analysis of Lead-Based Paint using the Teledyne Leeman Labs Prodigy High Dispersion ICP

Lead-based paints have been used extensively for painting the interior and exterior surfaces of homes. These paints were applied to almost any surface; however, they were most commonly found on interior and exterior woodwork including: doors, window frames and windowsills, cupboards and interior moldings. Almost all of the homes constructed before 1970 contain some lead-based paint. Until 1950, some of these paints contained up to 50% lead (500,000 ppm) and by the late 1960s, paints containing more than 1% (10,000 ppm) were still being used.

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在清潔認證和純水測試方面如何選擇TOC的檢測方式

在清潔認證和純水測試的領域內,如何選擇總有機碳(TOC)分析儀,需要考慮眾多因素。不同的TOC分析儀制造商會使用不同的測試技術,從而對分析數據產生不同的影響,導致用戶在選擇上遇到困難。本文通過分析比較兩種主要的TOC 檢測技術——非分散紅外(NDIR)與膜電導率,將為用戶的不同需求提供選擇建議。

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兩種氧化方法測試NaCl樣品中總有機碳含量

人們對海水中總碳及總有機碳的濃度一直很關心。目前市面上一些總有機碳(TOC)分析儀能夠簡單、直接地對樣品進行分析,而且可以有效避免因樣品中含有氯離子所帶來的干擾問題。

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純水和注射用水中總有機碳含量測定

水,尤其是純水(PW)和靜脈注射用水(WFI)在制藥行業起著至關重要的作用,生產和保證水的清潔度需要嚴格的質量控制和精確的分析方法,美國藥典(USP)和日本藥典(JP)已經將總有機碳(TOC)分析用于驗證PW和WFI清潔度的標準之一。

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采用靜壓濃度分析技術的高溫總有機碳(TOC)分析儀對鹽水進行分析

海水中有機碳快速分析的需要越來越多,由于海水具有復雜的基體,導致在分析的過程中對儀器消耗較大,維護成本也的所增加,所以對此方法的研究具有較大挑戰性,本方法主要是針對解決以上的問題而開發的對海水中有機碳快速分析。

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